in U.S. v. Miller that the NFA neither interferes with police authority granted to each State nor conflicts with the rights granted by the 2nd Amendment.

The argument isn't to repeal the entire NFA, only 922(o). This prohibits the registration of machineguns for civilian use after 1986. I would LOVE to be able to pay the $200 NFA tax on new machineguns, but the government has decided not to accept my payment. THAT is how they are banning guns. We WANT the government to abide by the NFA.